Many questions about dumerils boa

[soad]

Hello everyone! so this is my first time on any forum so bare with me.
I will be getting my first Dumerils Boa in a couple of weeks here. I did own a Ball Python before which I must say was absolutely wonderful. So some questions I have:
First off I would like to build my own cage and I was going to do so with six pieces of glass, some 2x4 and some hinges. Does anyone have any suggestions or input on if That would be good material to use or if I should take another route.
Secondly, I would like to feed my snake live out of my own preference. The only things I was worried about was hearing about rats attacking the snakes once they've reached a bigger size. Are there precautions to take in this case? any input would be great.
I was considering making the tank 5' long 2' wide and 1.5' tall. I believe that should be a reasonable size but I was wondering the best way to heat that. Once again any input would be great and thanks for your time!